US8779121B2 - Process for the synthesis of 3-(2-bromo-4,5-dimethoxyphenyl)propanenitrile, and application in the synthesis of ivabradine and addition salts thereof with a pharmaceutically acceptable acid - Google Patents
Process for the synthesis of 3-(2-bromo-4,5-dimethoxyphenyl)propanenitrile, and application in the synthesis of ivabradine and addition salts thereof with a pharmaceutically acceptable acid Download PDFInfo
- Publication number
- US8779121B2 US8779121B2 US14/051,805 US201314051805A US8779121B2 US 8779121 B2 US8779121 B2 US 8779121B2 US 201314051805 A US201314051805 A US 201314051805A US 8779121 B2 US8779121 B2 US 8779121B2
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- Expired - Fee Related
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- RTLIPOJZEZPTLW-UHFFFAOYSA-N CC1=CC=C(CCC#N)C=C1C Chemical compound CC1=CC=C(CCC#N)C=C1C RTLIPOJZEZPTLW-UHFFFAOYSA-N 0.000 description 5
- SRACRBFRENLMPX-UHFFFAOYSA-N CC1=CC(Br)=C(CCC#N)C=C1C Chemical compound CC1=CC(Br)=C(CCC#N)C=C1C SRACRBFRENLMPX-UHFFFAOYSA-N 0.000 description 3
- AFYVUYMQVNICHA-UHFFFAOYSA-N CCCC1=C(Br)C=C(C)C(C)=C1 Chemical compound CCCC1=C(Br)C=C(C)C(C)=C1 AFYVUYMQVNICHA-UHFFFAOYSA-N 0.000 description 3
- QDCRVQUFTYXQND-UHFFFAOYSA-N C#CC1CC2=C1C=C(C)C(C)=C2 Chemical compound C#CC1CC2=C1C=C(C)C(C)=C2 QDCRVQUFTYXQND-UHFFFAOYSA-N 0.000 description 2
- WPRAXAOJIODQJR-UHFFFAOYSA-N CC(=O)C1=CC=C(C)C(C)=C1 Chemical compound CC(=O)C1=CC=C(C)C(C)=C1 WPRAXAOJIODQJR-UHFFFAOYSA-N 0.000 description 2
- FSWZNLXVXQHXPY-ONEGZZNKSA-N CC1=CC=C(/C=C/C#N)C=C1C Chemical compound CC1=CC=C(/C=C/C#N)C=C1C FSWZNLXVXQHXPY-ONEGZZNKSA-N 0.000 description 2
- PKRKQYZQPMFUJG-UHFFFAOYSA-N COc(cc(CCC#N)c(Br)c1)c1OC Chemical compound COc(cc(CCC#N)c(Br)c1)c1OC PKRKQYZQPMFUJG-UHFFFAOYSA-N 0.000 description 2
- LECKQPWCSYMCDR-UHFFFAOYSA-N COc(ccc(CCC#N)c1)c1OC Chemical compound COc(ccc(CCC#N)c1)c1OC LECKQPWCSYMCDR-UHFFFAOYSA-N 0.000 description 2
- MTUIYCFQQCQHLJ-UHFFFAOYSA-N CC1=CC2=C(C=C1C)CC(=O)N(CCCI)C=C2 Chemical compound CC1=CC2=C(C=C1C)CC(=O)N(CCCI)C=C2 MTUIYCFQQCQHLJ-UHFFFAOYSA-N 0.000 description 1
- XVAZJRYWJOBDOF-RUZDIDTESA-N CC1=CC2=C(C=C1C)CC(=O)N(CCCN(C)C[C@H]1CC3=C1C=C(C)C(C)=C3)C=C2 Chemical compound CC1=CC2=C(C=C1C)CC(=O)N(CCCN(C)C[C@H]1CC3=C1C=C(C)C(C)=C3)C=C2 XVAZJRYWJOBDOF-RUZDIDTESA-N 0.000 description 1
- UIWMFRZYAJNSCI-UHFFFAOYSA-N CCCC1CC2=C1C=C(C)C(C)=C2 Chemical compound CCCC1CC2=C1C=C(C)C(C)=C2 UIWMFRZYAJNSCI-UHFFFAOYSA-N 0.000 description 1
- RQOJKQULDUGUGJ-UHFFFAOYSA-N CCCCN1C=CC2=C(C=C(C)C(C)=C2)CC1=O Chemical compound CCCCN1C=CC2=C(C=C(C)C(C)=C2)CC1=O RQOJKQULDUGUGJ-UHFFFAOYSA-N 0.000 description 1
- UIWMFRZYAJNSCI-NSHDSACASA-N CCC[C@H]1CC2=C1C=C(C)C(C)=C2 Chemical compound CCC[C@H]1CC2=C1C=C(C)C(C)=C2 UIWMFRZYAJNSCI-NSHDSACASA-N 0.000 description 1
- KYQVLKYJXNBHAU-UHFFFAOYSA-N CNCC1CC2=C1C=C(C)C(OC)=C2 Chemical compound CNCC1CC2=C1C=C(C)C(OC)=C2 KYQVLKYJXNBHAU-UHFFFAOYSA-N 0.000 description 1
- KYQVLKYJXNBHAU-SNVBAGLBSA-N CNC[C@H]1CC2=C1C=C(C)C(OC)=C2 Chemical compound CNC[C@H]1CC2=C1C=C(C)C(OC)=C2 KYQVLKYJXNBHAU-SNVBAGLBSA-N 0.000 description 1
- LKPBJWSRVFKRTE-XMMPIXPASA-N COC1=CC2=C(C=C1C)[C@@H](CN(C)CCCN1C=CC3=C(C=C(C)C(C)=C3)CC1=O)C2 Chemical compound COC1=CC2=C(C=C1C)[C@@H](CN(C)CCCN1C=CC3=C(C=C(C)C(C)=C3)CC1=O)C2 LKPBJWSRVFKRTE-XMMPIXPASA-N 0.000 description 1
- SUCJUZXAYVMSHG-XMMPIXPASA-N COC1=CC2=C(C=C1C)[C@@H](CN(C)CCCN1CCC3=C(C=C(C)C(C)=C3)CC1=O)C2 Chemical compound COC1=CC2=C(C=C1C)[C@@H](CN(C)CCCN1CCC3=C(C=C(C)C(C)=C3)CC1=O)C2 SUCJUZXAYVMSHG-XMMPIXPASA-N 0.000 description 1
- VWPSZWNLEFZFQB-UHFFFAOYSA-N COc(cc(CC(N(CCCI)C=C1)=O)c1c1)c1OC Chemical compound COc(cc(CC(N(CCCI)C=C1)=O)c1c1)c1OC VWPSZWNLEFZFQB-UHFFFAOYSA-N 0.000 description 1
- WJUFSDZVCOTFON-UHFFFAOYSA-N COc(ccc(C=O)c1)c1OC Chemical compound COc(ccc(C=O)c1)c1OC WJUFSDZVCOTFON-UHFFFAOYSA-N 0.000 description 1
- HJTHVTHXHHFXMJ-UHFFFAOYSA-N COc1cc(CC2C#N)c2cc1OC Chemical compound COc1cc(CC2C#N)c2cc1OC HJTHVTHXHHFXMJ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/30—Preparation of carboxylic acid nitriles by reactions not involving the formation of cyano groups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/06—Antiarrhythmics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/08—Vasodilators for multiple indications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/14—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D223/16—Benzazepines; Hydrogenated benzazepines
Definitions
- the present invention relates to a process for the synthesis of (3-(2-bromo-4,5-dimethoxyphenyl)propanenitrile of formula (I):
- Ivabradine, and its addition salts with a pharmaceutically acceptable acid, and more especially its hydrochloride have very valuable pharmacological and therapeutic properties, especially bradycardic properties, making those compounds useful in the treatment or prevention of various clinical situations of myocardial ischaemia such as angina pectoris, myocardial infarction and associated rhythm disturbances, and also in various pathologies involving rhythm disturbances, especially supraventricular rhythm disturbances, and in heart failure.
- the addition salt of ivabradine with a pharmaceutically acceptable acid may be prepared starting from an acid selected from hydrochloric acid, hydrobromic acid, sulphuric acid, phosphoric acid, acetic acid, trifluoroacetic acid, lactic acid, pyruvic acid, malonic acid, succinic acid, glutaric acid, fumaric acid, tartaric acid, maleic acid, citric acid, ascorbic acid, oxalic acid, methanesulphonic acid, benzenesulphonic acid and camphoric acid.
- an acid selected from hydrochloric acid, hydrobromic acid, sulphuric acid, phosphoric acid, acetic acid, trifluoroacetic acid, lactic acid, pyruvic acid, malonic acid, succinic acid, glutaric acid, fumaric acid, tartaric acid, maleic acid, citric acid, ascorbic acid, oxalic acid, methanesulphonic acid, benzenesulphonic acid and camphoric acid
- Zhao et al. have described synthesis of the compound of formula (I), starting from 3,4-dimethoxybenzaldehyde, in three steps in an overall yield of 51% (CN101 407 474 A and J. Chem. Res. 2009, 7, pp 420-422).
- the compound of formula (I) is a key intermediate in the synthesis of ivabradine.
- the present invention relates to a process for the synthesis of the compound of formula (I):
- organic solvents that may be used to carry out the conversion of the compound of formula (VIII) into the compound of formula (I)
- organic solvents there may be mentioned, without implying any limitation, N,N-dimethylformamide, tetrahydrofuran, acetonitrile, acetic acid, methanol, dichloromethane and toluene.
- the solvent preferably used to carry out the conversion of the compound of formula (VIII) into the compound of formula (I) is N,N-dimethylformamide.
- the conversion of the compound of formula (VIII) into the compound of formula (I) is carried out at a temperature preferably between ⁇ 10° C. and 30° C., inclusive.
- the present invention relates also to a process for the synthesis of the compound of formula (I) starting from the compound of formula (VIII), characterised in that said compound of formula (VIII) is prepared starting from the compound of formula (IX):
- the phosphorus ylide preferably used to carry out the conversion of the compound of formula (IX) into the compound of formula (X) is diethyl cyanomethyl phosphonate.
- the base preferably used to carry out the conversion of the compound of formula (IX) into the compound of formula (X) is potassium tert-butoxide.
- organic solvents that may be used to carry out the conversion of the compound of formula (IX) into the compound of formula (X)
- organic solvents there may be mentioned, without implying any limitation, tetrahydrofuran, acetonitrile and toluene.
- the organic solvent preferably used to carry out the conversion of the compound of formula (IX) into the compound of formula (X) is tetrahydrofuran.
- the conversion of the compound of formula (IX) into the compound of formula (X) is preferably carried out at a temperature between ⁇ 5° C. and 120° C., inclusive.
- hydride donor agents that may be used to carry the conversion of the compound of formula (X) into the compound of formula (VIII)
- sodium borohydride ammonium formate in the presence of Pd/C
- formic acid in the presence of Pd(OAc) 2 .
- the hydride donor agent preferably used to carry out the conversion of the compound of formula (X) into the compound of formula (VIII) is sodium borohydride.
- organic solvents that may be used to carry out the conversion of the compound of formula (X) into the compound of formula (VIII)
- alcoholic solvents such as methanol and ethanol, and tetrahydrofuran.
- a mixture of organic solvents preferably the mixture pyridine/methanol, may also be used to carry out the conversion of the compound of formula (X) into the compound of formula (VIII).
- the conversion of the compound of formula (X) into the compound of formula (VIII) is preferably carried out at a temperature between 25° C. and 110° C., inclusive.
- the present invention relates also to a process for the synthesis of ivabradine starting from the compound of formula (I) prepared in accordance with the process of the invention and converted into the compound of formula (III) following the teaching of the prior art ( Tetrahedron 1973, 29, pp 73-76) by an intramolecular cyclisation reaction in a basic medium, said compound of formula (III) then being converted into ivabradine in accordance with the process described in EP 0 534 859.
- the melting points were measured using a BÜCHI B-545 Melting Point Apparatus (Volt. 230 VAC, Freq. 50/60 Hz, Power max. 220 W).
- Step 2 ethyl (3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl)carbamate
- Example 3 The amine obtained in Example 3 is reacted with an equimolar amount of (d) camphorsulphonic acid in ethanol. After evaporating off the solvent in vacuo, the salt is recrystallised first from ethyl acetate and then from acetonitrile until the target enantiomer is obtained with an optical purity of more than 99% (evaluated by HPLC on a Chiralcel® OD column).
- aqueous phase separated off is brought to basic pH using sodium hydroxide and is then extracted with ethyl acetate. After washing until neutral and drying over MgSO 4 , evaporation in vacuo is carried out to obtain 4.5 g of an oil which is purified on a silica column using a mixture of dichloromethane/methanol (90/10) as eluant.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1259745A FR2996845A1 (fr) | 2012-10-12 | 2012-10-12 | Nouveau procede de synthese du 3-(2-bromo-4,5-dimethoxyphenyl)propanenitrile, et application a la synthese de l'ivabradine et de ses sels d'addition a un acide pharmaceutiquement acceptable |
| FR1259745 | 2012-10-12 | ||
| FR12/59745 | 2012-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| US20140107334A1 US20140107334A1 (en) | 2014-04-17 |
| US8779121B2 true US8779121B2 (en) | 2014-07-15 |
Family
ID=47356189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/051,805 Expired - Fee Related US8779121B2 (en) | 2012-10-12 | 2013-10-11 | Process for the synthesis of 3-(2-bromo-4,5-dimethoxyphenyl)propanenitrile, and application in the synthesis of ivabradine and addition salts thereof with a pharmaceutically acceptable acid |
Country Status (35)
| Country | Link |
|---|---|
| US (1) | US8779121B2 (es) |
| EP (1) | EP2719689B1 (es) |
| JP (1) | JP5793171B2 (es) |
| KR (1) | KR101567887B1 (es) |
| CN (1) | CN103724228B (es) |
| AR (1) | AR092983A1 (es) |
| AU (1) | AU2013237671C1 (es) |
| BR (1) | BR102013026030A2 (es) |
| CA (1) | CA2829428C (es) |
| CY (1) | CY1117315T1 (es) |
| DK (1) | DK2719689T3 (es) |
| EA (1) | EA024408B1 (es) |
| ES (1) | ES2564959T3 (es) |
| FR (1) | FR2996845A1 (es) |
| GE (1) | GEP20156320B (es) |
| HK (2) | HK1191318A1 (es) |
| HR (1) | HRP20160200T1 (es) |
| HU (1) | HUE027867T2 (es) |
| MA (1) | MA35597B1 (es) |
| MD (1) | MD4335C1 (es) |
| ME (1) | ME02329B (es) |
| MX (1) | MX2013011705A (es) |
| MY (1) | MY160147A (es) |
| NZ (1) | NZ616558A (es) |
| PL (1) | PL2719689T3 (es) |
| PT (1) | PT2719689E (es) |
| RS (1) | RS54536B1 (es) |
| SA (1) | SA113340924B1 (es) |
| SG (1) | SG2013074570A (es) |
| SI (1) | SI2719689T1 (es) |
| TW (1) | TWI500597B (es) |
| UA (1) | UA117655C2 (es) |
| UY (1) | UY35068A (es) |
| WO (1) | WO2014057228A1 (es) |
| ZA (1) | ZA201307601B (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3101010A1 (en) | 2015-06-03 | 2016-12-07 | Urquima S.A. | New method for the preparation of highly pure ivabradine base and salts thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2303919A1 (de) | 1972-01-28 | 1973-08-02 | Nisshin Flour Milling Co | Verfahren zur herstellung von benzylpyrimidinderivaten |
| US4618683A (en) | 1982-06-01 | 1986-10-21 | Abbott Laboratories | Tetrahydro-6,7-dimethoxy-1H-benz[e]isoinodolines useful in the treatment of hypertension and as sedatives |
| WO2011008597A1 (en) | 2009-07-14 | 2011-01-20 | Schering Corporation | Dihydroimidazoisoquinoline derivatives useful as pde10 inhibitors |
| WO2011138625A1 (en) | 2010-05-07 | 2011-11-10 | Richter Gedeon Nyrt. | Industrial process for the synthesis of ivabradine salts |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0043194A3 (en) * | 1980-06-19 | 1982-03-31 | FISONS plc | Bicyclo-octatriene derivatives, pharmaceutical compositions containing them and processes and intermediates for their production |
| JPS61130253A (ja) * | 1984-11-28 | 1986-06-18 | Otsuka Pharmaceut Factory Inc | ナフトキノン誘導体 |
| US5112836A (en) * | 1989-06-19 | 1992-05-12 | Kyorin Pharmaceutical Co., Ltd. | Cyclic anthranililc acid carboxylic acid derivatives and medical therapeutic use thereof |
| JPH06263688A (ja) * | 1991-09-04 | 1994-09-20 | Otsuka Pharmaceut Factory Inc | フェナンスレン誘導体 |
| FR2681862B1 (fr) * | 1991-09-27 | 1993-11-12 | Adir Cie | Nouvelles (benzocycloalkyl)alkylamines, leur procede de preparation, et les compositions pharmaceutiques qui les contiennent. |
| JP3186419B2 (ja) * | 1993-03-26 | 2001-07-11 | 富士レビオ株式会社 | ４−フルオロビフェニル誘導体 |
| CN1228775A (zh) * | 1996-05-14 | 1999-09-15 | 葛兰素集团有限公司 | 作为时间生物学药物的苯并呋喃和苯并吡喃 |
| FR2763588B1 (fr) * | 1997-05-23 | 1999-07-09 | Cird Galderma | Composes triaromatiques, compositions les contenant et utilisations |
| SK2792004A3 (en) * | 2001-12-13 | 2004-11-03 | Egyt Gyogyszervegyeszeti Gyar | Process for the preparation of tofisopam and new intermediates |
| DK1569912T3 (en) * | 2002-12-03 | 2015-06-29 | Pharmacyclics Inc | 2- (2-hydroxybiphenyl-3-yl) -1h-benzoimidazole-5-carboxamidine derivatives as factor VIIa inhibitors. |
| KR100613810B1 (ko) * | 2004-12-17 | 2006-08-17 | 주식회사 두산 | 전계 발광 소자용 화합물 및 이를 포함하는 유기 전계발광소자 |
| CN101407474B (zh) * | 2008-11-18 | 2011-12-14 | 东华大学 | 一种2-溴-4,5-二甲氧基苯丙腈的制备方法 |
-
2012
- 2012-10-12 FR FR1259745A patent/FR2996845A1/fr not_active Withdrawn
-
2013
- 2013-10-01 MY MYPI2013701833A patent/MY160147A/en unknown
- 2013-10-02 CA CA2829428A patent/CA2829428C/fr not_active Expired - Fee Related
- 2013-10-02 AU AU2013237671A patent/AU2013237671C1/en not_active Ceased
- 2013-10-03 MA MA36298A patent/MA35597B1/fr unknown
- 2013-10-04 SG SG2013074570A patent/SG2013074570A/en unknown
- 2013-10-04 UY UY0001035068A patent/UY35068A/es not_active Application Discontinuation
- 2013-10-08 KR KR1020130119978A patent/KR101567887B1/ko active IP Right Grant
- 2013-10-08 MX MX2013011705A patent/MX2013011705A/es unknown
- 2013-10-08 MD MDA20130071A patent/MD4335C1/ro not_active IP Right Cessation
- 2013-10-09 BR BR102013026030-4A patent/BR102013026030A2/pt not_active Application Discontinuation
- 2013-10-09 SA SA113340924A patent/SA113340924B1/ar unknown
- 2013-10-09 TW TW102136631A patent/TWI500597B/zh not_active IP Right Cessation
- 2013-10-10 JP JP2013212669A patent/JP5793171B2/ja active Active
- 2013-10-10 UA UAA201311936A patent/UA117655C2/uk unknown
- 2013-10-10 GE GEAP201313258A patent/GEP20156320B/en unknown
- 2013-10-11 ME MEP-2016-15A patent/ME02329B/me unknown
- 2013-10-11 ES ES13188228.4T patent/ES2564959T3/es active Active
- 2013-10-11 ZA ZA2013/07601A patent/ZA201307601B/en unknown
- 2013-10-11 PL PL13188228T patent/PL2719689T3/pl unknown
- 2013-10-11 RS RS20160036A patent/RS54536B1/en unknown
- 2013-10-11 WO PCT/FR2013/052431 patent/WO2014057228A1/fr active Application Filing
- 2013-10-11 EA EA201301020A patent/EA024408B1/ru not_active IP Right Cessation
- 2013-10-11 US US14/051,805 patent/US8779121B2/en not_active Expired - Fee Related
- 2013-10-11 NZ NZ616558A patent/NZ616558A/en not_active IP Right Cessation
- 2013-10-11 AR ARP130103695A patent/AR092983A1/es unknown
- 2013-10-11 EP EP13188228.4A patent/EP2719689B1/fr not_active Revoked
- 2013-10-11 HU HUE13188228A patent/HUE027867T2/en unknown
- 2013-10-11 SI SI201330143T patent/SI2719689T1/sl unknown
- 2013-10-11 DK DK13188228.4T patent/DK2719689T3/en active
- 2013-10-11 PT PT131882284T patent/PT2719689E/pt unknown
- 2013-10-12 CN CN201310474582.2A patent/CN103724228B/zh not_active Expired - Fee Related
-
2014
- 2014-05-12 HK HK14104471.4A patent/HK1191318A1/zh not_active IP Right Cessation
- 2014-07-04 HK HK14106803.8A patent/HK1193409A1/zh not_active IP Right Cessation
-
2016
- 2016-02-25 HR HRP20160200T patent/HRP20160200T1/hr unknown
- 2016-03-22 CY CY20161100244T patent/CY1117315T1/el unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2303919A1 (de) | 1972-01-28 | 1973-08-02 | Nisshin Flour Milling Co | Verfahren zur herstellung von benzylpyrimidinderivaten |
| US4618683A (en) | 1982-06-01 | 1986-10-21 | Abbott Laboratories | Tetrahydro-6,7-dimethoxy-1H-benz[e]isoinodolines useful in the treatment of hypertension and as sedatives |
| WO2011008597A1 (en) | 2009-07-14 | 2011-01-20 | Schering Corporation | Dihydroimidazoisoquinoline derivatives useful as pde10 inhibitors |
| WO2011138625A1 (en) | 2010-05-07 | 2011-11-10 | Richter Gedeon Nyrt. | Industrial process for the synthesis of ivabradine salts |
Non-Patent Citations (5)
| Title |
|---|
| Paull K.D., et al., Journal of Organic Chemistry, vol. 37, No. 21, pp. 3374-3376, Jan. 1, 1972. |
| Preliminary Search Report for FR 1200745 of Jul. 3, 2013. |
| S.D. Sanders. et al., "Supplementary Material for Chemical Communicaiton", The Royal Society of Chemistry 2009, Jan. 1, 2009, pp. S1-S20. |
| Shanina D. Sanders, et at Chemical Communications. No. 34, pp. 5135-3157. Jan. 1, 2009. |
| Zhao Sheng Yin, et al., Journal of Chemical Research, No. 7, pp. 420-422, Jan. 1, 2009. |
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| Date | Code | Title | Description |
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